3. How would you test the presence of starch in leaves?
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We can test starch on leaves by dropping some drops of alcohol on it.
If colour of leave changed to purple, it means starch is present.
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The presence of starch in leaves can be tested by Iodine test. When we remove chlorophyll from leaf by boiling it in alcohol and then put 2 drops of iodine solution, its colour change to blue indicates the presence of starch.
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